Waterproqfing composition and process of making



Patented .lian; 9, 11923 5."

gir:

CLARENCE D. SHAFFER, OF- KALAMAZOO, MICHIGAN, ASSIGNOR TO 'TEXTILE, LEATHER y & METAL rnnsnavnn 00., or KALAMAZOO, MICHIGANZ.

WATERPROOFING COMPOSITION AND EROCESS OF MAKING.

No Drawing. Application filed Deceniber 27, 1921, Serial No. 525,210. Renewed December i, 1922.

To all whom it may concern:

, I, Be it known that I, CLARENCE D'. SHAFFER,

- a citizen of the United States, residing at making.

The main objects of the invention are;

First, to provide an improved 'waterproofing composition which is effective and very durable and may be used to effectively waterproof leather, fabrics and other flexible materials, and is also an effective rust preventive when applied to metals.

Second, to provide an improved waterproofing composition 'which may be prepared or compounded, without" danger to the workers, one which will keep indefinitely and also a composition which is quite economical to produce.

' The ingredients of myimproved w'aterproofing composition are a paracoumarone resin or synthetic resin compounded fromcoal tar distillates, the product preferred by "mg one part cumar,'tw'o parts rubber, two

- inc-being commercially known as cumar,

which is a composition of the character in-' dicated, rubber, preferably 'pure Para rubber, paraffin wax, and alight hydrocarbon oil such as gasoline, naphtha, kerosene, benzine and the like. ---These ingredients are preferably combined in approximately-the proportions indicated and in the following manner--the cumar and parafiinare placed in a retort or other heating receptacle in the proportion of one part cumar,

These ingreand two parts parafiin wax. dients are heated to a temperature approximating 320 Fahrenheit, ori to such a tem- I perature as will melt the cumar and cause the paraffin to mix and combine therewith,

the temperature being held until the ingredients are thoroughly melted and united into a homogeneous condition.

To this mixture and while the same is still I hot I add two parts rubber, preferably pure Para rubber, reduced to a syrupy condition such as rubber cement. The rubber may be introduced to the mixture while cold a1- the rubber is introdu ced and the rubber and other ingredients readily combine into a homogeneous mixture.

The mixture is allowed to cool in the open air and about twenty parts. hydrocarbon oil such as ga'soline'a'dded to the mixture, which produces a liquid composition which may be applied to fabrim, leather and'other similar materials without in any way changing the While I preferably use the cumar as.

stated, other paracoumarone resin maybe employed; the proportions set forth may be considerablyvaried with quite satisfactory results, but I find the proportions indicated 4 hi hly satisfactory;-

avmg thus described my invention, what I claim as new and desire to secure by Letters Patent, is: Y

1. A waterproofing composition comprisparts paraflin, and twenty parts hydrocarbon oil.

2. waterproofing liquid comprising a paracoumarone resin, rubber, paraflin', and

light hydrocarbon oil combined in substantially the proportions described.

3. A waterproofing composition. comprising a homo eneous mixture of cumar,

rubber, para n, and alight hydrocarbon.

LA waterproofing composition comprisin a homogeneous mixture of cumar, ru her and paraffin.

5. A waterproofing liquid comprising a paracoumarone resin, rubber, paraffin and a hydrocarbon oil.

6. The process of making water proofing composition consisting of heating cumar and paraffin in the proportions of one part 'cumar to two parts paraflin wax to a temperature approximating 320 degrees Fahrenheit, and maintaining the temperature until the ingredients are melted to gether, adding to the hot mixture two parts rubber reduced to the consistency of thin syrup and mixing to a homogeneous mixture, and adding light hydrocarbon oil in the proportion of approximately four parts of the oil to one part of the mixture.

7. The process of making Water proofing composition Consisting of heating a paracoumarone resin and paraffin Wax to a temperature approximating 320 Fahrenheit until melted together, and adding rubber reduced to the consistency of syrup to the hot inixtureand mixing to a homogeneous .co-n- I .10 dition, and adding a hydrocarbon oil.

8. The process of making Waterproofing oil.

In witness whereof, I have hereunto set until melted together and adding rubber to.

the hot mixture and' mixing to a homogeneous condition and adding a' hydrocarbon my hand and seal.

CLARENCE n SHAFFE-R. m 

